Lighting fixture support



Dec. 27, 1960 M. LIBERMAN LIGHTING FIXTURE SUPPORT Filed July 29, 1957INVENTQR 44/4 701V 4 LBE'RMHN United States Patent LIGHTING FIXTURESUPPORT Milton Liberman, 65 Sewane Road, East Rockaway, N.Y. Filed July29, 1957, Ser. No. 674,688

3 Claims. (Cl. 248-343) This invention relates to lighting fixtures andmore particularly to a novel and improved lighting fixture support formounting flush type fixtures in a supporting surface.

The mounting of flush type fixtures in ceilings or other supportingsurfaces has presented a number of problems including the relativelyhigh cost of known mounting devices and difiiculties entailed ininstallation of the mount, attachment of the fixture and adjustment ofthe fixture when secured to the mount.

Lighting fixtures of the flush mounting type are generally mounted to astable support in the ceiling or other surface with plaster beingsubsequently applied over the supporting structure to cause it to adhererigidly to the ceiling while also providing generally a pleasing efiect.However, once the fixture is immovably fixed and the plaster appliedover the supporting structure, there is no way for adjusting or rotatingthe fixture to a new position.

The invention herein overcomes the limitations of known flush typefixtures by providing a novel and improved supporting structure or mountfor retaining a lighting fixture in position on the ceiling or othersupporting wall and at the same time affording means for angularlyadjusting the fixture to direct the light source in a desired direction.

It is therefore one object of this invention to provide an adjustablemount for a flush type lighting fixture.

Another object of this invention is to provide an improved flush mountfor lighting fixtures which facilitates attachement of the fixture andaffords easy adjustment of the fixture to provide variations inlighting.

Other objects, aspects and advantages of the invention will become moreapparent from the following description and accompanying drawingswherein:

Figure 1 is a sectional view of the ceiling fixture and the supportingstructure according to the invention;

Figure 2 is an exploded view of the fixture support or mount;

Figure 3 is a fragmentary plan view of the fixture mount with partsbroken away; and

Figure 4 is a cross sectional view taken along the line 4-4 of Figure 3.

Referring now to the drawing, there is shown a flush type ceilingfixture support assembly generally denoted by reference numeral andcomprising an annular ring base 11 having a downwardly extendingcylindrical flange 12 along the inner periphery thereof. Another annularguide ring member 13, having an upwardly extending offset portion 14along the inner periphery, is mounted to the ring base member 11 andsecured thereto in any conventional manner such as spot or continuouswelding and the like. When the guide ring member 13 and the base member11 are joined to form a substantially unitary ring-like structure, thereis defined by reason of the offset flange 14 and ring 11, an annularrecess or groove 15. The annular groove 15 rotatably receives a thirdannular ring member 17 having an upwardly extending flange 18 along theinner periphery. Although a continuous ring member 17 is shown, it ispossible to have the ring segmented, or discontinuous, as long as someportion thereof traverses the groove defined by the base and guide ringmembers. The rotatable annular ring member 17 represents the movableportion of the ceiling fixture support to which the lighting fixture isattached.

A number of upwardly extending support brackets 19, 20 and 21 arecarried by the rotatable ring 17 and secured to the inner surface of theupwardly extending flange 18 in any suitable manner as by welding,soldering and the like. The lower portion of each bracket slidablyengages the inner surfaces of the flange 12 to maintain a steadierrotational movement of the rotatable member 17 and holds the member 17in alignment with the ring members 11 and 13. Finally, the lightingfixture 25 is attached to the support bracket-s by means of screws 26extending through the wall 27 of the fixture and threadably engagingopenings 28 in the brackets.

In operation the fixture support assembly 10 is first secured to someaccessible ceiling support member, such as lathing and the like, beforeplastering or other ceiling covering is applied. The ceiling coveringsuch as plaster or the like covers the ring like portions 11 and 13leaving only the central opening defined by the flange 12. The fixture25 which has an offset light source 29 is then installed and secured byscrews 26. When the screws 26, accessible from within the fixture byopening the grill 30, are loose, the fixture can be rotated to anydesired angular position. Upon tightening the screws 26 the fixture 25is automatically locked in position.

What is claimed is:

l. A flush ceiling support for lighting fixtures comprising a firstannular ring member having a predetermined inside diameter, a secondfixture carrying annular ring member having substantially saidpredetermined inside diameter, said ring members each carrying acylindrical flange of substantially said predetermined inside diameterand extending from the inner periphery of its associated ring member,said ring members further being in overlying slidable engagement withsaid cylindrical flanges extending in opposite directions, and meanscarried by the first said ring member for r0- tatably retaining thesecond member on the first said member.

2. A flush ceiling support for lighting fixtures comprising a firstannular ring member having a predetermined inside diameter, a secondfixture carrying annular ring member having substantially saidpredetermined inside diameter, said ring members each carrying acylindrical flange of substantially said predetermined inside diameterand extending from the inner periphery of its associated ring member,said ring members further being in overlying slidable engagement withsaid cylindrical flanges ex-' tending in opposite directions, and meanscarried by the first said ring member for rotatably retaining the secondmember on the first said member, the last said means comprising a ringsecured to the first said annular ring member to form an annular groovefor retaining said second annular ring member.

3. A support according to claim 2 including elongated bracket memberssecured to the inner surface of the cylindrical fiange of said secondannular ring member and extending in a direction perpendicular to theplane of rotation of the second member with one end of each bracketmember slidably engaging the inner surface of the cylindrical flange ofthe first annular ring member and the other end of each bracketincluding fixture attaching means.

References Cited in the file of this patent UNITED STATES PATENTSMcCandless Mar. 22, 1949 Phillips Ian. 23, 1951 Bernstein July 3, 1951Young Feb. 26, 1952 Versen Oct. 21, 1952

